In the other examples at StackOverflow there are many questions about using FormGroups in FormArrays. But my question is the opposite.
FormArrays have a push method, that makes many things possible. FormGroups have indeed an addControl method for adding simple FormControls. Afaik FormGroups do not have addFormArray or addFormGroup method. Therefore I need your help.
Following situation:
this.myForm = this.fb.group({
id: this.fb.control([this.book.id]),
// or short form `id: [this.book.id],`
});
Adding a simple control at a later point in time is …